"Ooh."

There are, it transpires, books on glassworking in the library. Glassmakers tint glass by adding certain substances while creating it.

Huh. Okay.

Or by adding a sort of gravel of tinted glass to clear glass! This is called "frit."

"Gosh, I guess if you can't do magic to glass you have to make stuff up."

"Some people can do magic to glass but there aren't that many magicians."

"Do they do it the same as me?"

"I don't think so, but I'm not a magician. You could ask Her Majesty later maybe. Or one of Her Majesty's siblings."

"What's a sibling?"

"...It means they have the same parents."

"Oh."

"It's an important relationship."

"Important how?"

"Peoples' siblings matter to them."

"Why?"

"Well, they grow up together."

"What is growing up like?"

"...Nontrivial to explain."

"Oh."

"Sorry. It's just--complicated."

"It sounds it!"

"People are complicated."

Nod, nod.

"You don't seem very complicated but you haven't existed for very long."

"Would existing longer make me more complicated?"